As you know, baryons having strangness (heyrons) exist in dense matter like high density supernova explosion environment, neutrons stars, or early stage of blackhole. Today, we can obtain the basic information on hyperon-nucleon (YN) interaction at around normal nuclear density through pion induced heavy ion collision at KEK etc. Then we know Lambda-N, Xi-N interaction at the normal density from such a recent progress in strengeness nuclear physcs. However, unfortunately, Sigma-N interaction has a large ambiguity even at present. This difference of Sigma-N interaction results in different components of dense matter and the stiffness of EOS. Therefore, we provide various EOS tables within this Sigma-N ambiguity as follows in this site. We wish this EOS tables will be helpful to your study.

*** RELATIVISITC EOS TABLE ***

We adopt these YN interaction: Lamda-N = -30MeV, Xi-N = -15MeV, Siga-N=(-30 to +90)MeV. The most recomended Sigma-N interaction is +30 MeV at normal density. These EOS tables contain the same information as Shen EOS table, physical quantities such as pressure, energy, or somethig like that, follow the Shen EOS notation and units. Therefore if you have already used Shen EOS table, you can apply these EOS tables to your calculations. The following compressed directories are made of two files --- "####.tbl" and "####.urt".

"####.tbl" means EOS table in Shen EOS table style, while you can see particle ratios at each (Ye, rhoB, T) in "####.urt". Here, the (Ye, rhoB, T) conditions are decided by Shen EOS tables. The former four files consist of only nucleons and hyperons, thermal pion contributions are added to the latter four files.

- Shen EOS+Hyperons(Sigma-N=-30MeV)
- Shen EOS+Hyperons(Sigma-N=0MeV)
- Shen EOS+Hyperons(Sigma-N=+30MeV)
- Shen EOS+Hyperons(Sigma-N=+90MeV)
- Shen EOS+Hyperons+pions(Sigma-N=-30MeV)
- Shen EOS+Hyperons+pions(Sigma-N=0MeV)
- Shen EOS+Hyperons+pions(Sigma-N=+30MeV)
- Shen EOS+Hyperons+pions(Sigma-N=+90MeV)
- Shen EOS+Y(log(rhoB)=5.1to17.1,T=0to400MeV) updated at 2007/9/8
- EoSs for uniform NS matter(See README for the detail in the compressed files) updated at 2015/3/27
- EoSs for NS matter including inhomo. phase(Provided by Micaela Oertel) updated at 2015/6/5. The first column is the central baryon density [fm^{-3}], the second the central energy density [MeV/fm^3], the third the radius [km] and the fourth the gravitational mass [M_sol].
- NS matter EoS with hyperons and thermal pions(Provided by Micaela Oertel) updated at 2015/6/5.
- NS matter EoS with Lambda, HShen'11(Provided by Micaela Oertel) updated at 2015/6/5.
- NS Mass-Radius of HShen'11 with Lambda(Provided by Micaela Oertel) updated at 2015/6/5.

You can see the detail of our EOS in Jornal of Physics G:

Nucl.Part.Phys.35085201(19pp),2008

nucl-th/0802.2318v3

Simulation of black-hole formation with this EOS was performed by Sumiyoshi et al.

(NICX proceedings and ApJL 690 L43-L46, 2009)

nucl-th/0811.4237

If you have any questions and comments, please let me know!

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Chikako ISHIZUKA (PhD)

Tokyo University of Science

Post-doctral Research Fellow

E-mail:chikako@rs.tus.ac.jp

Website:http://aspht1.ph.noda.tus.acjp

Phone:+81-4-7122-1790 (Extension no.:3267)

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